@ Aceton,
I'm sorry to hear about the problems with your reader. Some helpful information including troubleshooting tips, bulletins even repair setup if needed for your model may be found at http://esupport.sony.com . If this information is not useful or you need further assistance, please contact Sony’s customer support @ 1-800-222-7669.
Sincerely,
Evelyn Perez
Sonylistens Team